1114 ベンチュリ管を用いた気液二相噴流の構造と気泡の微細化に関する一考察(2)(OS11-3 ナノ・マイクロフルイディクス(マイクロ混相流),OS11 ナノ・マイクロフルイディクス,オーガナイズドセッション)

概要

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The effects of void fraction and surfactant for gas-liquid two-phase jets on cleaning with a venturi tube were investigated experimentally using two kinds of air-supply methods. The two-phase flows inside the tube and jet structures were observed with a high-speed video camera. The results show that the higher the void fraction becomes, the higher the cleaning efficiency becomes. Although the proportion of surfactant contributes the fission of bubbles involved in the jet, it has minor roles on the cleaning; the intermittent bursting of jets is a significant factor for cleaning. The observation shows that the backward air flow into the tube occurs near the outlet, which contributes to the occurence of the bursting. The cleaning efficiency with the naturally aspirated air supply is almost the same as that with the compressed air supply.
一般社団法人日本機械学会の論文
2007-11-17